<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    package maze.gui;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.awt.Component;<a name="line.3"></a>
<FONT color="green">004</FONT>    <a name="line.4"></a>
<FONT color="green">005</FONT>    import javax.swing.BorderFactory;<a name="line.5"></a>
<FONT color="green">006</FONT>    import javax.swing.DefaultComboBoxModel;<a name="line.6"></a>
<FONT color="green">007</FONT>    import javax.swing.DefaultListCellRenderer;<a name="line.7"></a>
<FONT color="green">008</FONT>    import javax.swing.DefaultListSelectionModel;<a name="line.8"></a>
<FONT color="green">009</FONT>    import javax.swing.JComponent;<a name="line.9"></a>
<FONT color="green">010</FONT>    import javax.swing.JList;<a name="line.10"></a>
<FONT color="green">011</FONT>    import javax.swing.JScrollPane;<a name="line.11"></a>
<FONT color="green">012</FONT>    import javax.swing.ListSelectionModel;<a name="line.12"></a>
<FONT color="green">013</FONT>    import javax.swing.SwingUtilities;<a name="line.13"></a>
<FONT color="green">014</FONT>    import javax.swing.event.ListDataEvent;<a name="line.14"></a>
<FONT color="green">015</FONT>    import javax.swing.event.ListDataListener;<a name="line.15"></a>
<FONT color="green">016</FONT>    import javax.swing.event.ListSelectionEvent;<a name="line.16"></a>
<FONT color="green">017</FONT>    import javax.swing.event.ListSelectionListener;<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    import maze.Main;<a name="line.19"></a>
<FONT color="green">020</FONT>    import maze.model.MazeInfo;<a name="line.20"></a>
<FONT color="green">021</FONT>    <a name="line.21"></a>
<FONT color="green">022</FONT>    public class MazeList extends JScrollPane implements ListSelectionListener, ListDataListener<a name="line.22"></a>
<FONT color="green">023</FONT>    {<a name="line.23"></a>
<FONT color="green">024</FONT>       /**<a name="line.24"></a>
<FONT color="green">025</FONT>        * Internal JList instance.<a name="line.25"></a>
<FONT color="green">026</FONT>        */<a name="line.26"></a>
<FONT color="green">027</FONT>       private final JList myList = new JList();<a name="line.27"></a>
<FONT color="green">028</FONT>       /**<a name="line.28"></a>
<FONT color="green">029</FONT>        * The maze view we are attached to.<a name="line.29"></a>
<FONT color="green">030</FONT>        */<a name="line.30"></a>
<FONT color="green">031</FONT>       private final MazeView mazeView;<a name="line.31"></a>
<FONT color="green">032</FONT>       /**<a name="line.32"></a>
<FONT color="green">033</FONT>        * Holds a global list selection model that is shared among all instances of<a name="line.33"></a>
<FONT color="green">034</FONT>        * this class. This allows all the currently selected mazes to be changed at<a name="line.34"></a>
<FONT color="green">035</FONT>        * once.<a name="line.35"></a>
<FONT color="green">036</FONT>        */<a name="line.36"></a>
<FONT color="green">037</FONT>       private static ListSelectionModel listSelectionModel;<a name="line.37"></a>
<FONT color="green">038</FONT>    <a name="line.38"></a>
<FONT color="green">039</FONT>       /**<a name="line.39"></a>
<FONT color="green">040</FONT>        * Getter that initializes on first call.<a name="line.40"></a>
<FONT color="green">041</FONT>        */<a name="line.41"></a>
<FONT color="green">042</FONT>       private static ListSelectionModel getListSelectionModel()<a name="line.42"></a>
<FONT color="green">043</FONT>       {<a name="line.43"></a>
<FONT color="green">044</FONT>          if (listSelectionModel == null)<a name="line.44"></a>
<FONT color="green">045</FONT>          {<a name="line.45"></a>
<FONT color="green">046</FONT>             listSelectionModel = new DefaultListSelectionModel();<a name="line.46"></a>
<FONT color="green">047</FONT>             listSelectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);<a name="line.47"></a>
<FONT color="green">048</FONT>          }<a name="line.48"></a>
<FONT color="green">049</FONT>          return listSelectionModel;<a name="line.49"></a>
<FONT color="green">050</FONT>       }<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>       /**<a name="line.52"></a>
<FONT color="green">053</FONT>        * Sole Constructor.<a name="line.53"></a>
<FONT color="green">054</FONT>        * @param mazeView The MazeView this MazeList is to be attached to.<a name="line.54"></a>
<FONT color="green">055</FONT>        */<a name="line.55"></a>
<FONT color="green">056</FONT>       public MazeList(MazeView mazeView)<a name="line.56"></a>
<FONT color="green">057</FONT>       {<a name="line.57"></a>
<FONT color="green">058</FONT>          this.mazeView = mazeView;<a name="line.58"></a>
<FONT color="green">059</FONT>          super.setBorder(BorderFactory.createTitledBorder("Available Mazes"));<a name="line.59"></a>
<FONT color="green">060</FONT>          super.setViewportView(this.myList);<a name="line.60"></a>
<FONT color="green">061</FONT>          final DefaultComboBoxModel model = Main.getPrimaryFrameInstance().getMazeInfoModel().getMazeInfoComboBoxModel();<a name="line.61"></a>
<FONT color="green">062</FONT>          model.removeListDataListener(this);<a name="line.62"></a>
<FONT color="green">063</FONT>          model.addListDataListener(this);<a name="line.63"></a>
<FONT color="green">064</FONT>          this.myList.setModel(model);<a name="line.64"></a>
<FONT color="green">065</FONT>          this.myList.setSelectionModel(getListSelectionModel());<a name="line.65"></a>
<FONT color="green">066</FONT>          this.myList.getSelectionModel().addListSelectionListener(this);<a name="line.66"></a>
<FONT color="green">067</FONT>    <a name="line.67"></a>
<FONT color="green">068</FONT>          /**<a name="line.68"></a>
<FONT color="green">069</FONT>           * This uses the save renderer for all lists. If it is later decided that<a name="line.69"></a>
<FONT color="green">070</FONT>           * only the editor list should display dirty status this can be changed to<a name="line.70"></a>
<FONT color="green">071</FONT>           * an option.<a name="line.71"></a>
<FONT color="green">072</FONT>           */<a name="line.72"></a>
<FONT color="green">073</FONT>          this.myList.setCellRenderer(new OpenMazeRenderer());<a name="line.73"></a>
<FONT color="green">074</FONT>          if (this.myList.getModel().getSize() &gt; 0 &amp;&amp; this.myList.isSelectionEmpty())<a name="line.74"></a>
<FONT color="green">075</FONT>          {<a name="line.75"></a>
<FONT color="green">076</FONT>             this.myList.setSelectedIndex(0);<a name="line.76"></a>
<FONT color="green">077</FONT>          }<a name="line.77"></a>
<FONT color="green">078</FONT>          //Set the model of the maze view to the currently selected.<a name="line.78"></a>
<FONT color="green">079</FONT>          this.valueChanged(null);<a name="line.79"></a>
<FONT color="green">080</FONT>       }<a name="line.80"></a>
<FONT color="green">081</FONT>    <a name="line.81"></a>
<FONT color="green">082</FONT>       /**<a name="line.82"></a>
<FONT color="green">083</FONT>        * Get the underlying JList instance.<a name="line.83"></a>
<FONT color="green">084</FONT>        */<a name="line.84"></a>
<FONT color="green">085</FONT>       public JList getList()<a name="line.85"></a>
<FONT color="green">086</FONT>       {<a name="line.86"></a>
<FONT color="green">087</FONT>          return this.myList;<a name="line.87"></a>
<FONT color="green">088</FONT>       }<a name="line.88"></a>
<FONT color="green">089</FONT>    <a name="line.89"></a>
<FONT color="green">090</FONT>       /**<a name="line.90"></a>
<FONT color="green">091</FONT>        * This event is triggered when the list selection changes. When a selecting<a name="line.91"></a>
<FONT color="green">092</FONT>        * is made on the list this event is fired twice, once with ValueIsAdjusting<a name="line.92"></a>
<FONT color="green">093</FONT>        * true and once with it false. We don't worry about it here because when we<a name="line.93"></a>
<FONT color="green">094</FONT>        * set the maze view with the model that is already set it should be ignored<a name="line.94"></a>
<FONT color="green">095</FONT>        * and not trigger a repaint.<a name="line.95"></a>
<FONT color="green">096</FONT>        */<a name="line.96"></a>
<FONT color="green">097</FONT>       @Override<a name="line.97"></a>
<FONT color="green">098</FONT>       public void valueChanged(ListSelectionEvent e)<a name="line.98"></a>
<FONT color="green">099</FONT>       {<a name="line.99"></a>
<FONT color="green">100</FONT>          try<a name="line.100"></a>
<FONT color="green">101</FONT>          {<a name="line.101"></a>
<FONT color="green">102</FONT>             MazeInfo mi = (MazeInfo) this.myList.getSelectedValue();<a name="line.102"></a>
<FONT color="green">103</FONT>             if (mi != null)<a name="line.103"></a>
<FONT color="green">104</FONT>                this.mazeView.setModel(mi.getModel());<a name="line.104"></a>
<FONT color="green">105</FONT>          }<a name="line.105"></a>
<FONT color="green">106</FONT>          catch (RuntimeException ex)<a name="line.106"></a>
<FONT color="green">107</FONT>          {<a name="line.107"></a>
<FONT color="green">108</FONT>             ex.printStackTrace();<a name="line.108"></a>
<FONT color="green">109</FONT>          }<a name="line.109"></a>
<FONT color="green">110</FONT>       }<a name="line.110"></a>
<FONT color="green">111</FONT>    <a name="line.111"></a>
<FONT color="green">112</FONT>       /**<a name="line.112"></a>
<FONT color="green">113</FONT>        * Renders a MazeInfo object displaying its dirty status.<a name="line.113"></a>
<FONT color="green">114</FONT>        */<a name="line.114"></a>
<FONT color="green">115</FONT>       private static class OpenMazeRenderer extends DefaultListCellRenderer<a name="line.115"></a>
<FONT color="green">116</FONT>       {<a name="line.116"></a>
<FONT color="green">117</FONT>          @Override<a name="line.117"></a>
<FONT color="green">118</FONT>          public Component getListCellRendererComponent(JList list, Object value, int index,<a name="line.118"></a>
<FONT color="green">119</FONT>                boolean isSelected, boolean cellHasFocus)<a name="line.119"></a>
<FONT color="green">120</FONT>          {<a name="line.120"></a>
<FONT color="green">121</FONT>             MazeInfo mi = (MazeInfo) value;<a name="line.121"></a>
<FONT color="green">122</FONT>             final String postfix;<a name="line.122"></a>
<FONT color="green">123</FONT>             if (mi.isDirty())<a name="line.123"></a>
<FONT color="green">124</FONT>                postfix = "*";<a name="line.124"></a>
<FONT color="green">125</FONT>             else<a name="line.125"></a>
<FONT color="green">126</FONT>                postfix = "";<a name="line.126"></a>
<FONT color="green">127</FONT>             Component c = super.getListCellRendererComponent(list,<a name="line.127"></a>
<FONT color="green">128</FONT>                                                              mi.getName() + postfix,<a name="line.128"></a>
<FONT color="green">129</FONT>                                                              index,<a name="line.129"></a>
<FONT color="green">130</FONT>                                                              isSelected,<a name="line.130"></a>
<FONT color="green">131</FONT>                                                              cellHasFocus);<a name="line.131"></a>
<FONT color="green">132</FONT>             JComponent jc = (JComponent) c;<a name="line.132"></a>
<FONT color="green">133</FONT>             String path = mi.getPath();<a name="line.133"></a>
<FONT color="green">134</FONT>             if (path != null &amp;&amp; !path.equals(""))<a name="line.134"></a>
<FONT color="green">135</FONT>                jc.setToolTipText(path);<a name="line.135"></a>
<FONT color="green">136</FONT>             return jc;<a name="line.136"></a>
<FONT color="green">137</FONT>          }<a name="line.137"></a>
<FONT color="green">138</FONT>       }<a name="line.138"></a>
<FONT color="green">139</FONT>    <a name="line.139"></a>
<FONT color="green">140</FONT>       @Override<a name="line.140"></a>
<FONT color="green">141</FONT>       public void contentsChanged(ListDataEvent e)<a name="line.141"></a>
<FONT color="green">142</FONT>       {}<a name="line.142"></a>
<FONT color="green">143</FONT>    <a name="line.143"></a>
<FONT color="green">144</FONT>       /**<a name="line.144"></a>
<FONT color="green">145</FONT>        * This listener is triggered when an item is added to the maze list data<a name="line.145"></a>
<FONT color="green">146</FONT>        * model (ComboBoxModel).<a name="line.146"></a>
<FONT color="green">147</FONT>        */<a name="line.147"></a>
<FONT color="green">148</FONT>       @Override<a name="line.148"></a>
<FONT color="green">149</FONT>       public void intervalAdded(final ListDataEvent e)<a name="line.149"></a>
<FONT color="green">150</FONT>       {<a name="line.150"></a>
<FONT color="green">151</FONT>          //We have to set the selection to run later or else it won't see the newly added item.<a name="line.151"></a>
<FONT color="green">152</FONT>          SwingUtilities.invokeLater(new Runnable()<a name="line.152"></a>
<FONT color="green">153</FONT>          {<a name="line.153"></a>
<FONT color="green">154</FONT>             @Override<a name="line.154"></a>
<FONT color="green">155</FONT>             public void run()<a name="line.155"></a>
<FONT color="green">156</FONT>             {<a name="line.156"></a>
<FONT color="green">157</FONT>                getListSelectionModel().setSelectionInterval(e.getIndex0(), e.getIndex1());<a name="line.157"></a>
<FONT color="green">158</FONT>             }<a name="line.158"></a>
<FONT color="green">159</FONT>          });<a name="line.159"></a>
<FONT color="green">160</FONT>       }<a name="line.160"></a>
<FONT color="green">161</FONT>    <a name="line.161"></a>
<FONT color="green">162</FONT>       @Override<a name="line.162"></a>
<FONT color="green">163</FONT>       public void intervalRemoved(ListDataEvent e)<a name="line.163"></a>
<FONT color="green">164</FONT>       {}<a name="line.164"></a>
<FONT color="green">165</FONT>    <a name="line.165"></a>
<FONT color="green">166</FONT>    }<a name="line.166"></a>




























































</PRE>
</BODY>
</HTML>
